全部

1·The chemical formula of water is H₂O.

水的化学式是H₂O。youdao

2·H is the symbol for hydrogen in the periodic table.

在元素周期表中，H是氢的符号。youdao

3·Scientists are researching new ways to produce H more efficiently.

科学家们正在研究更高效地生产氢的新方法。youdao

4·The experiment involves the reaction of H with other elements.

该实验涉及氢与其他元素的反应。youdao

5·H plays an important role in many chemical processes.

氢在许多化学过程中起着重要作用。youdao

6·We need to understand the properties of H better.

我们需要更好地了解氢的性质。youdao

7·The energy source of the future might be based on H.

未来的能源可能基于氢。youdao

8·H can be used in fuel cells to generate electricity.

氢可用于燃料电池发电。youdao

9·The study focuses on the behavior of H under different conditions.

这项研究专注于氢在不同条件下的行为。youdao

10·H is one of the lightest elements in the universe.

氢是宇宙中最轻的元素之一。youdao

氢

1·So we have h, then we can draw our bond as a line.

那么我们有氢，可以把我们的键画成一条线。

2·So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.

这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。

3·Radial Solutions, Hydrogen Wave Functions, H Spectrum.

辐射式方程的解，氢原子波函数，氢光谱。

4·In their elementary composition, the enzymes show the usual proportion of c, h, n, and s found in proteins.

从元素组成来看，酶显示出与通常蛋白质一样的碳，氢，氮及硫的元素比例。

5·Studies of the C and H isotopic composition of natural gases of continental origin will provide valuable information on the prospecting and development of natural gases of different genetic types.

通过对我国陆相成因天然气碳、氢同位素研究，探讨其同位素组成特征及其意义，从而为各种成因类型天然气的勘探开发提供了有益的信息。

(1)H beam宽幅工字梁；宽缘工字梁；工字梁